Geared Turbofan Jet Engine

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Legacy777
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Geared Turbofan Jet Engine

Post by Legacy777 » Wed Jan 09, 2013 5:07 pm

The gas turbine design has really been at the cutting edge of what is possible in terms of materials and overall design for years. This geared turbofan engine is pretty amazing.

http://www.main.experiencetherave.com/t ... rbofan.pdf
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beatersubi
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Re: Geared Turbofan Jet Engine

Post by beatersubi » Thu Jan 10, 2013 4:52 am

Pretty cool. Seems like a simple concept but rather fragile in real application.
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Re: Geared Turbofan Jet Engine

Post by Legacy777 » Thu Jan 10, 2013 6:50 pm

How so?

It's not a concept, it's going to be a production engine. With the size of the gearing, I can't see it being too fragile.
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Re: Geared Turbofan Jet Engine

Post by kimokalihi » Thu Jan 10, 2013 9:22 pm

Probably referring to the fact that it has to maintain such a high efficiency to keep it from burning up the lubrication.
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Re: Geared Turbofan Jet Engine

Post by SILINC3R » Fri Jan 11, 2013 12:08 am

That's how a lot of turbo engines work. They have to operate at really close to 100% but use variable stator vanes, props, or blades to change the torque without having to "increase the speed of the engine". Since they operate at that high level, they design the oil system that way to be most efficient.
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Re: Geared Turbofan Jet Engine

Post by beatersubi » Fri Jan 11, 2013 3:45 am

kimokalihi wrote:Probably referring to the fact that it has to maintain such a high efficiency to keep it from burning up the lubrication.

This is what I meant.
And by 'simple concept', it seems so simple yet is only now being put into production.
93 legacy wagon L, 22T swapped (TW imitator) now with five forward speeds.
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Re: Geared Turbofan Jet Engine

Post by kimokalihi » Fri Jan 11, 2013 5:05 am

Yeah I don't know the technology but 99.3% efficiency sounds pretty high.
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Re: Geared Turbofan Jet Engine

Post by ggbox69 » Fri Jan 11, 2013 4:31 pm

Cool article. Looks like by the nature of the gearing, the fan and engine rotate in opposite directions, hypnotizing! You can see gear teeth on the outside of the ring gear driving the fan, I wonder if there is more gearing involved that is not shown. I like the Connecticut shout outs too, I wonder if they build them at Pratt's E. Hartford plant.
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Re: Geared Turbofan Jet Engine

Post by Legacy777 » Fri Jan 11, 2013 7:25 pm

beatersubi wrote:And by 'simple concept', it seems so simple yet is only now being put into production.



Ahh ok.



It'd be cool to see one in person without the engine faring on.
Josh

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

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